55463334721 has 4 divisors (see below), whose sum is σ = 55466804932. Its totient is φ = 55459864512.

The previous prime is 55463334709. The next prime is 55463334733. The reversal of 55463334721 is 12743336455.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (55463334709) and next prime (55463334733).

It can be written as a sum of positive squares in 2 ways, for example, as 30928498225 + 24534836496 = 175865^2 + 156636^2 .

It is a cyclic number.

It is not a de Polignac number, because 55463334721 - 2¹⁹ = 55462810433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55463344721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1711020 + ... + 1743133.

It is an arithmetic number, because the mean of its divisors is an integer number (13866701233).

Almost surely, 2^55463334721 is an apocalyptic number.

It is an amenable number.

55463334721 is a deficient number, since it is larger than the sum of its proper divisors (3470211).

55463334721 is a wasteful number, since it uses less digits than its factorization.

55463334721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3470210.

The product of its digits is 907200, while the sum is 43.

The spelling of 55463334721 in words is "fifty-five billion, four hundred sixty-three million, three hundred thirty-four thousand, seven hundred twenty-one".